To support debugging in attachable mode, it is important to compile the r-code according to these rules:

• Use the DEBUG-LIST option with the COMPILE statement, and specify a location to which the Debugger has access as the location for the debug listing.
• Do not use MIN-SIZE option with the COMPILE statement. This option strips the Debugger Segment from the generated r-code.

For more information about these options, see the section on the COMPILE statement in ABL Reference.